A Rigorous Combination of Space Geodetic Techniques: A Bayesian Approach

Details A Rigorous Combination of Space Geodetic Techniques: A Bayesian Approach A Rigorous Combination of Space Geodetic Techniques: A Bayesian Approach

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufm.g43c1477b&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #G43C-1477

Mathematics

Probability

1229 Reference Systems, 1239 Earth Rotation Variations

Scientific paper

The IERS has encouraged the development of rigorous combination techniques of the ITRF, EOPs, and ICRF in recent years. These techniques use space geodetic data at the observation level, e.g. fundamental site coordinates and velocities, and quasar coordinates and motion. The standard approach to combining such data is the use of normal equations with minimal constraints and the rejection of outlier data, usually using an iterative solution. We propose an alternative technique using Bayesian inference to estimate EOPs. This poster gives an outline of the technique being developed and discusses the benefits of Bayesion inference in the handling of constraints and outlier data using the prior probability distribution function. The poster concludes with some preliminary results of EOPs using GPS and VLBI data.

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